Final answer:
The molecular formula of the compound is C4H5N2O.
Step-by-step explanation:
The molecular formula represents the actual number of atoms of each element in a compound.
To determine the molecular formula, we need to divide the percent composition by the atomic mass of each element, round to the nearest whole number, and then multiply by the smallest whole number that gives us the same ratios.
In this case, the molecular formula of the compound with a percent composition of 49.47% C, 5.201% H, 28.84% N, and 16.48% O, and a molecular mass of 194.2 amu is C4H8N6O2.